A new method of testing the gravitational redshift effect with radio interferometers. (arXiv:1812.00605v1 [astro-ph.IM])

A new method of testing the gravitational redshift effect with radio interferometers. (arXiv:1812.00605v1 [astro-ph.IM])
<a href="http://arxiv.org/find/astro-ph/1/au:+Pilipenko_S/0/1/0/all/0/1">S. V. Pilipenko</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Litvinov_D/0/1/0/all/0/1">D. A. Litvinov</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Filetkin_A/0/1/0/all/0/1">A. I. Filetkin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rudenko_V/0/1/0/all/0/1">V. N. Rudenko</a>

We propose a new method to measure gravitational redshift effect using
simultaneous interferometric observations of a distant radio source to
synchronize clocks. The first order by $v/c$ contribution to the signal (the
classical Doppler effect) is automatically canceled in our setup. When other
contributions from the velocities of the clocks, clock imperfection and
atmosphere are properly taken into account, the residual gravitational redshift
can be measured with the relative precision of $sim 10^{-3}$ for RadioAstron
space-to-ground interferometer or with precision up to few $10^{-5}$ with the
next generation of space radio interferometers.

We propose a new method to measure gravitational redshift effect using
simultaneous interferometric observations of a distant radio source to
synchronize clocks. The first order by $v/c$ contribution to the signal (the
classical Doppler effect) is automatically canceled in our setup. When other
contributions from the velocities of the clocks, clock imperfection and
atmosphere are properly taken into account, the residual gravitational redshift
can be measured with the relative precision of $sim 10^{-3}$ for RadioAstron
space-to-ground interferometer or with precision up to few $10^{-5}$ with the
next generation of space radio interferometers.

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